Plug and play distributor

Why not just replace the pickup coil in the existing distributor? And the advance can while you're at it? Would be cheaper and at least as good.
I have accumulated enough new old aftermarket replacement ones for a song via eBay to last me a lifetime. 4 Phillips screws and both components are out. Easy. The ones I have are brands such as Sorensen, niehoff, filko. Brands that were USA made, but unfortunately aren't around any more. "Some" Standard, Borg warner etc brands which are still common, and aren't horrible.
I have explained several times that due to the fact that the age, condition, and brand of distributor is unknown because it came in the car and was not installed by myself is the reason I chose to replace it. Frankly I can't understand why people keep telling me to replace components when that's not the question I asked.